Monitoring recent crustal movements in the African continent by means of geodetic methods

The need for geodetic measurements is emphasized, and the requirements in accuracy are indicated. It is argued that the present limitations of the space techniques leave no option but to recourse to terrestrial methods.The necessity of repeating the measurements on schedule over several decades calls for an eleborate co-ordination of activities across national boundaries. The active participation of the IUGG and the IAG can be instrumental in initiating such co-ordination and in sustaining it.